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Cemented carbide material for hole machining tool guide block and preparation method thereof

A cemented carbide and machining tool technology, applied in the field of hole machining tools, can solve the problems of increased brittleness, excessive wear, and the hole accuracy and size cannot meet the requirements, so as to improve sintering performance, enhance wear resistance, improve The effect of high temperature performance

Active Publication Date: 2018-10-26
CHENGDU TOOL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the commonly used guide block materials are: YT15, YG8. These materials become brittle or wear too fast during use, resulting in the hole accuracy and size not meeting the requirements during processing. It is urgent to develop materials with better performance. Meet the higher level requirements of deep hole processing tools

Method used

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  • Cemented carbide material for hole machining tool guide block and preparation method thereof
  • Cemented carbide material for hole machining tool guide block and preparation method thereof
  • Cemented carbide material for hole machining tool guide block and preparation method thereof

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preparation example Construction

[0043] According to the second aspect of the present invention, the preparation method of above-mentioned cemented carbide material is provided, and this method comprises the following steps:

[0044] Step 1. Mix WC, quaternary solid solution (W, Ti, Ta, Nb) C and Co.

[0045] According to the present invention, the above three raw material components are mixed according to the formula ratio, wherein the Co content is 5wt.%-15wt.%, preferably 6wt.%-11wt.%, more preferably 8wt.%-10wt.%. The elemental solid solution (W, Ti, Ta, Nb) has a C content of 12wt.%-25wt.%, preferably 15wt.%-22wt.%, more preferably 18wt.%-21wt.%, and the rest is WC.

[0046] According to the present invention, the above three raw material components have respective average particle diameters, for example, the average particle diameter of WC is 1-2um, the average particle diameter of (W, Ti, Ta, Nb)C is 1.5-2.5um, and the average particle diameter of Co The particle size is about 1 um.

[0047] Step 2, ...

Embodiment 1

[0083] It is used for deep hole processing tool guide block cemented carbide material, the content of Co in the binder phase is 10wt.%, the content of C in the quaternary solid solution (W, Ti, Ta, Nb) is 20wt.%, and the rest is WC. WC in cemented carbide The particle size of the solid solution is 1.1um, and the average particle size of the solid solution is 1.3um.

[0084] The preparation steps are as follows: According to the formula, WC with an average particle size of 1um, (W, Ti, Ta, Nb)C with an average particle size of 1.5um, and Co with 1um are mixed in proportion, and hexane is used as a wet grinding medium, and each kilogram Add 300 ml of powder, the ball-to-material ratio is 4:1, the ball milling time is 64 hours, the wax is mixed for 2 hours, dried and granulated, pressed into a blade blank, and sintered at a temperature of 1435°C and 3 MPa for 1.5 hours under low pressure to obtain the material matrix of this example.

[0085] After testing, the prepared material ...

Embodiment 2

[0087] Cemented carbide material for deep hole processing tool guide block, the content of Co in the binder phase is 8wt.%, the content of C in the quaternary solid solution (W, Ti, Ta, Nb) is 17wt.%, and the rest is WC. WC in the cemented carbide The particle size of the solid solution is 1.3um, and the average particle size of the solid solution is 1.5um.

[0088] The preparation steps are as follows: according to the recipe, WC with an average particle size of 1.5um, (W, Ti, Ta, Nb)C with an average particle size of 1.9um, and Co with 1um were mixed in proportion, and hexane was used as a wet grinding medium. Add 300 ml to 1 kg of powder, the ball-to-material ratio is 4:1, the ball milling time is 64 hours, the wax is mixed for 2 hours, dried and granulated, pressed into a blade blank, and sintered at a temperature of 1435 °C and 3 MPa for 1.5 hours at a low pressure to obtain the material matrix of this example .

[0089] After testing, the prepared material has a hardnes...

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Abstract

The invention discloses a hard alloy material and a preparing method thereof. According to the material, the Co content of a binding phase is 5-15wt.%, C content of quaternary solid solution (W, Ti, Ta and Nb) is 12-25wt.%, and the balance is WC. The invention also discloses usage of the hard alloy material for the guide block of a deep hole machining cutter and the hole machining cutter with the guide block prepared from the hard alloy material. The hard alloy material of the present invention can give full play to excellent performance of Ti and Ta, the hardness of the alloy is improved, the wear resistance of the alloy is enhanced and the sintering performances of the alloy are improved; a material hardness is about 92HRA, the strength is more than 2000MPa and high red hardness and wear resistance are realized.

Description

technical field [0001] The invention relates to a base material for preparing a cemented carbide cutter and a preparation method thereof, and also relates to a hole processing cutter with a guide block made of the material, which belongs to the field of metal material chip processing cutters. Background technique [0002] With the development of the machinery industry and the diverse needs of the market for mechanical parts, as an important branch of equipment manufacturing technology, deep hole processing technology is facing the challenges of multiple varieties, small batches, new materials and higher and higher precision requirements. . [0003] At the same time, the particularity of deep hole machining also poses difficulties in the machining process: difficult chip removal, difficult cooling and lubrication, low rigidity of the tool system, and poor self-guiding of the tool. These problems have plagued the deep hole processing industry for a long time, greatly limiting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05C22C1/10B23B51/00
CPCB23B51/0054C22C1/051C22C1/10C22C29/067C22C29/08
Inventor 张平彭建财王权陈德平任达平
Owner CHENGDU TOOL RES INST